Perforating-machine.



M. H. NORTON.

PERPORATING MACHINE.

APPLICATION FILED JUNE 6,1910. 983,756. Patented Feb. 7, 1911.

2 SHEETSSHEET l.

Wicnegsea Inventor 1 4 by l f x d 1 1 Attorneys I M. H. NORTON.

. PERFORATING MACHINE.

APPLICATION FILED JUNE 6, 1910.

Patented Feb; 7, 1911.

2 SHEETS-SHEET 2.

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nventor Attorneys ygses UNITED S ATES PATENT OFFICE.-

I MARTIN HENERY INORTON, OF NEWPORT, VI1RMONT.-

PEREORATING-MAICHINE.

. PatentedF'eb. 7,1911.

To all whom it may concern:

Be it known that I, MARTIN H. Non roN, a citizen of the' United States, residing at Newport, in the county of Orleans and State of Vermont, have invented a new and useful Perforating-Machine, ofwhich the following is a specification,

This invention relates to improvements in chair-seat perforating machines of that type illustrated in the Patent No. 807,295 the object of the invention being to remedy certain defects, and to make the machine more successful in operation; and to this end the invention consists in a novel construction and arrangement of parts to be hereinafter described gand claimed, reference being bad to the accompanying drawings, in which- Figure 1 is an elevation of. the machine showing the improvement hereinafter -re-' ferred to. Fig. 2 is a vertical section on the line 22 ofIFig. l. Fig. 3 is a perspective view of one of the punches. Fig.4 1s a fragmentor the blank feeding mechanism.

Referring more particularly to the drawings, 5 indicates the table of the machine, which, as shown, is supported on legs 6. The frame of the machine supports a trans: verse driveshat't t carrying 011 oneend tightand loose pulleys 8 and 9, and a balance wheel 10. To the opposite end of the shaft is fixed a pinion 11 which is in mesh with and drives a'spur gear 12 carried by a transverse. shaft 13 onrnnled in bearings onthe upper portion of the frame of the machine,

the latter being indicated at 1 1, it being ar-.

ranged in a suitable manner to support the several parts constituting the machine.

Theshaft 13 has a crank 15 whiclris connected by an adjustable link 16 with a vertically reciprm-at-ing slide17, mounted in ways 18 secured to the inner sides of the frame 14. Between the shaft l3 and 'the gear 12 is interposed a. suitable clutch mechanism, and as the same forms no part of the present invention, a detailed description thereof need notbe entered into. ,A reciprocating moveinentis imparted to the slide 17 from the driving pulley through the shaft 7, gears 11 and 12, and crank shaft 13 at such times as when the clttch ofthe gear 12 is,

in engagement.

-01i thetable 5 is mounted a bed 19 which is suitably perforated to allow the scraps from the punches'and dies to pass there through. On .this bed-is mounted a die plate 20' containing a series of punch holes loosel y through No. 807,295, heretofore referred to.

At 23 is indicated the punch carrier, the same being suitably secured to the slide 17. The punches are indicated at 24, they being formed with a concave cutting endv as clearly shown in Fig. 3, which gives four shearing edges. shearingedges'cut across the grain of the wood. This arrangement makes the punches cuteasy, and gives a clean cut.

At 25 is indicated-a stripping plate which is loosely carried by the slide 17.

The

punches pass through the stripping plate,

and the latter is provided with a series of' bushings similar to those shown anddescribed in the PatentNo. 807,295. 011 opposite sides of the slide,-at the bottom thereof, are outstanding flan es 26 through which loosely pass stems 27 w iich are connected to 'lhepunches will be so set that the 21 with bushing 22 as: disclosed in the Patent "the stripper plate 25, these-stems passing the punch carrier 23. Above the flanges 26, the stems are shouldered as indicated at 28, said shoulders engaging the top of the flanges 26, and tlierebv limiting the downward movementof the stripper plate also. To the top of 'theslide 17, on opposite sides thereof are secured guide-bars 29 for the stems 27, the latter passing loosely through openings 1nadein the ends of said bars projecting from the slide. Above the guide bars 29, the stems carry a cross head 30, said cross head being secured by nuts 3Lscrcwed on the stems above. and below thesame. The cross head is formed with a lug 32 which is in the path of a cam 33 on the crank shaft- 13. This cam, when it engages the lug. depresses the cross head, and by reason of the connection between the cross head. and the stems, and the connection between the stems and the stripper plate, the latter is lowered. Four of the herein described rods 27 are. connected tothe stripper plate, these rods being located' in pairs on opposite sides of the crank 15. Each .pair of rods carries a cross head, and each cross head is provided with a lug a cam 33 being alsoprovided for each lug.

In operation, the blanks are fed between the die plate 20 and the punches 24: by a feed mcclnniism.which need not be here described. The blankis perforated, by the punches when the slide wardly. When the stripper plate 25 enmovrment of the stems. and consequently the downward 17 moves downslightly, whereupon the lugs 32 come in theportion of the blank gages the blank- .it is pushed upwardly path of the cam 33. 'The'icams are so positioned .on the shaft 13 that they engage the lugs at theend of the punching operation.

When the punchesstart to move upwardly,;

the stripper plate moves downwardly, and strips off the blanks'from the punches.

The advantages of operating the stripper plate-as herein described is that the large number of springs disclosed in the Patent No. 807,295, aredispensed with, these springs being unreliable in action, and the cause of considerable delay by reason of frequent breakage.

At 3% is indicated a pitman which isa feeding mechanism. As shown-in Fig. 1, this pitman is in two telescoping sections which are yieldingly connected by a coiled-spring 35. By providing this yielding pitman there is no danger of the mechanism breaking in case any of the blanks should stick, which frequently happens by reason of the varying thicknessthereo To one end of the pitman 34 is connected an arm 36, on which arm is adjustably' mounted a weight 37'to assist the spring 35 in drawing the pitmansections together. The weight is held in adjusted position'by means of a set' screw 38. The arm 36 is connected to one of thearms of a bell crank netted a rod 4 0 which latter in turn is connected to the blank feeding mechanism, said mechanism being the same as the one illustrated in the Patent No. 807,295, in view of which a detailed description thereof will not be enleredinto.

What is claimed is:

l. The combination of av reciprocating slide, punches carried by the slide, a'shaft l'or o'peratingthe slide, sliding stems carried by the slide, said stems having shoul- (lvls, and the slidchaving stops ongageable by said shoulders, a stripper plate for the' punches carried by the stei ns,-- across head and means engageders'of the stems being engageable with said I flanges, a stripper plate-for the punches carried by the stems, guides on the upper end of the slide, said guides being engageable by the stems,v a cross head carried by the stems, and means engageable with the cross head for actuating the stems to operate the stripper plate.

3. The combination of a reciprocating slide, punches carried by the slide, a shaft for'o'perating the slide, sliding stems carried by the slide, said stems having sh'oulders, and the slide having stops engageable by said shoulders, a stripper plate for the,

punches carried by the stems, a cross head connected to the stems, a lug on the cross head, and a-cam on the shaft into the of which cam the lug extends."

4. The combination slide having outstanding flanges at its lower end, punches carried by the lower end of path the slide, shouldered stems extendingloosely through the flanges of the slide, the shoulhders of the stems being en ageable' with lever 39, to the other arm of which is con-:

said flanges, a stripper p ate for the punches carried by the stems, guides on the.

upper end of the slide, said guides being engageable by the stems, a cross head carried by the stems, a lug on the cross head, a shaft operatively connected to the slide, and a cam on the shaft into the path of which cam the lug extends.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

MARTIN I-IENERY NORTON. -lVity1csses:

E. A. SrnvNnn,

Jam-is L. SULLIVAN.

of a reciprocating 

